var person = {
  name: 'zhangsan',
  age: 15,
  gender: 'male',
  sayName: function () {
    console.log('my name is', this.name)
  }
}
var person1 = {
  name: 'lisi',
  age: 15,
  gender: 'male',
  sayName: function () {
    console.log('my name is', this.name)
  }
}
person.sayName()
person1.sayName()